Version 4
SHEET 1 952 680
WIRE -416 -32 -432 -32
WIRE -256 -32 -416 -32
WIRE -160 -32 -256 -32
WIRE 64 -32 -160 -32
WIRE 576 -32 528 -32
WIRE 752 -32 656 -32
WIRE 832 -32 752 -32
WIRE 864 -32 832 -32
WIRE 864 -16 864 -32
WIRE -432 0 -432 -32
WIRE -256 0 -256 -32
WIRE 752 0 752 -32
WIRE -160 32 -160 -32
WIRE -112 32 -160 32
WIRE 64 32 -32 32
WIRE 576 32 576 -32
WIRE 576 32 528 32
WIRE 752 80 752 64
WIRE 864 80 864 64
WIRE 656 96 656 -32
WIRE 656 96 528 96
WIRE -432 112 -432 80
WIRE -256 112 -256 80
WIRE 64 112 -256 112
WIRE -256 176 -256 112
WIRE -144 176 -256 176
WIRE 64 176 -144 176
WIRE 576 176 528 176
WIRE 704 176 656 176
WIRE -256 224 -256 176
WIRE -144 240 -144 176
WIRE 64 240 32 240
WIRE 704 240 704 176
WIRE 704 240 528 240
WIRE 704 272 704 240
WIRE -256 368 -256 288
WIRE -144 368 -144 304
WIRE 704 368 704 352
WIRE 176 384 176 368
WIRE 176 464 176 448
WIRE 400 464 400 368
WIRE 704 480 704 432
FLAG 176 464 0
FLAG 400 464 0
FLAG -432 112 0
FLAG -256 368 0
FLAG -144 368 0
FLAG 32 240 0
FLAG 704 480 0
FLAG 752 80 0
FLAG -416 -32 IN
FLAG 832 -32 OUT
FLAG 864 80 0
SYMBOL cap 160 384 R0
SYMATTR InstName C1
SYMATTR Value 0.22µ
SYMBOL voltage -432 -16 R0
WINDOW 3 -10 -99 Left 2
SYMATTR Value PWL(0 0 20u 12 0.1 12 +1m 80 0.2 80 +1m 12)
SYMATTR InstName V1
SYMBOL res -16 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200k
SYMBOL res -272 -16 R0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL cap -272 224 R0
SYMATTR InstName C2
SYMATTR Value 0.1µ
SYMBOL zener -160 304 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84C12L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 672 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10m
SYMBOL res 672 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10
SYMBOL res 688 256 R0
SYMATTR InstName R5
SYMATTR Value 33
SYMBOL cap 688 368 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL cap 736 0 R0
SYMATTR InstName C4
SYMATTR Value 22µ
SYMBOL res 848 -32 R0
SYMATTR InstName Rload
SYMATTR Value 100
SYMBOL LTC4381-4 288 176 R0
SYMATTR InstName U1
TEXT -352 472 Left 2 !.tran 12 startup